Save. Brand X Pictures/Brand X Pictures/Getty Images. A number of issues cause vertical lines on your computer screen, ranging from software incompatibilities with the computer's drivers to hardware problems involving the magnetic field of the monitor.
1) Segmented-Flow Analysis (SFA) The reaction stream is segmented with bubbles of air or nitrogen to reduce inter-sample dispersion. 2) Flow Injection Analysis (FIA) There are no air bubbles in the reaction stream.
Segmented regression. Segmented regression, also known as piecewise regression or broken-stick regression, is a method in regression analysis in which the independent variable is partitioned into intervals and a separate line segment is fit to each interval.